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b)2n-6-4n-1/2=-2n-6 1/2
c) x/2+1 1/2-4x-2:4=2
3x-x+1+9x-1=11x
b) 2(n-3) - (4n+1)/2 =2n-6-4n-1/2 /*2
4n-12-4n-1=-13n
c) (x+3)/2 - (4x+2)/4 /*4
2x+6-4x-2=-2x+4